Abstract
Background
The Swiss Federal Office of Public Health demanded a nationwide HTA-registry for cervical total disc arthroplasty (TDA), to decide about its reimbursement. The goal of the SWISSspine registry is to generate evidence about the safety and efficiency of cervical TDA.
Materials and methods
Three hundred thirty-two cases treated between 3.2005 and 6.2006 who were eligible for 5 years follow-ups were included in the study. Follow-up rates for 3–6 months, 1, 2 and 5 years were 84.6, 74.4, 50.6 and 64.8 %, respectively. Outcome measures were neck and arm pain, medication, quality of life, intraoperative and postoperative complication and revision rates. In addition, segmental mobility, ossification, adjacent and distant segment degeneration were analyzed at the 5-year follow-up.
Results
There was significant, clinically relevant and lasting reduction of neck (preop/postop 60/21 VAS points) and arm pain (preop/postop VAS 67/17) and a consequently decreased analgesics consumption and quality of life improvement (preop/postop 0.39/0.82 EQ-5D points) until the 5-year follow-up. The rates for intraoperative and early postoperative complications were 0.6 and 7.2 %, respectively. In 0.6 % an early and in 3.9 % a late revision surgery was performed. At the 5-year follow-up, the average range of motion of the mobile segments (88.2 %) was 10.2°. In 40.7 % of the patients osteophytes at least potentially affecting range of motion were seen.
Conclusions
Cervical TDA appeared as safe and efficient in long-term pain alleviation, consequent reduction of pain killer consumption and in improvement of quality of life. The improvement is stable over the 5 years postoperative period. The vast majority of treated segments remained mobile after 5 years, although 40.7 % of patients showed osteophytes.
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Acknowledgments
The authors are thankful to the SWISSspine registry group who made this research possible by populating the database with their valuable and much appreciated entries. Among others, the data of following colleagues were used in the study: Bärlocher C (n = 45), Sgier F (n = 40), Hasdemir M (n = 21), Etter C (n = 14), Markwalder T (n = 14), Favre J (n = 12), Ramadan A (n = 12), Wernli F (n = 12), Maestretti G (n = 10), Porchet F (n = 10), Baur M (n = 9), Cathrein P (n = 8), Hausmann O (n = 8), Grob D (n = 8), Otten P (n = 8), Tessitore E (n = 8), Heimberger K (n = 7), Bothmann M (n = 6), Ebeling U (n = 5), Scheufler KM (n = 5), Uehlinger K (n = 5), Aebi M (n = 4), Boos N (n = 4), Hamburger C (n = 4), Kast E (n = 4), Schaeren S (n = 4), Forster T (n = 3), Hora J (n = 3), Min K (n = 3), Morard M (n = 3), Moulin P (n = 3), Stoll TM (n = 3), Steinsiepe F (n = 3), Berlemann U (n = 2), Boscherini D (n = 2), Heini P (n = 2), Kraus U (n = 2), Marchesi D (n = 2), Martinez R (n = 2), Oberle J (n = 2), Renella R (n = 2), Schwarzenbach O (n = 2), Bartanusz V (n = 1), Binggeli R (n = 1), Bongioanni F (n = 1), Jeanneret B (n = 1), Kroeber M (n = 1), Schianchi P (n = 1). Funded by the AO Foundation start-up-grant S-10-41A.
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Aghayev, E., Bärlocher, C., Sgier, F. et al. Five-year results of cervical disc prostheses in the SWISSspine registry. Eur Spine J 22, 1723–1730 (2013). https://doi.org/10.1007/s00586-013-2770-0
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DOI: https://doi.org/10.1007/s00586-013-2770-0